A screw locking machine for electric vehicle handle

Abstract

The application relates to the technical field of auxiliary processing equipment, and relates to a screw locking machine for an electric vehicle handle, which comprises a main machine table, a clamp notch is formed in the top of the main machine table, a pressing mechanism is arranged on the top of the main machine table, a locking electric wrench is arranged on the pressing mechanism, a transmission shaft is fixedly connected to the output end of the locking electric wrench, an anti-slip wire mechanism is connected to the transmission shaft, and a locking wrench head is connected to the anti-slip wire mechanism; the air pump of the application delivers gas into the inner cavity of the outer sleeve through the pressure supply pipe, the annular shell and the communication groove, cooperates with the sealing ring to form stable air pressure, pushes the center frame to move upwards to make the inner and outer transmission block inclined surfaces tightly abut, realizes accurate transmission of the torque from the center frame to the outer sleeve, the connecting rod and the locking wrench head, when the screw rotation resistance exceeds the threshold value, the inner and outer transmission block inclined surfaces are separated, the pressure relief valve is opened to release pressure, the center frame falls to cut off the torque transmission, automatic torque cutting of overload is realized, and screw slip is effectively prevented.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of auxiliary processing equipment, and particularly relates to a screw locking machine for an electric vehicle handle. BACKGROUND

[0002] The screw locking machine for the electric vehicle handle is a core automatic device in the assembly process of the electric vehicle, and is mainly used for accurately locking and fixing a handle assembly on a handle rod by screws.

[0003] The existing screw locking machine driving mode controls the electric screwdriver to start and stop through a single electric control mode, when the screw rotation resistance exceeds a threshold value, the torque cannot be cut off in time, which easily causes the screw to slip, the handle screw hole to slip, and even causes the electric screwdriver to be overloaded and burned out; meanwhile, the instantaneous resistance is directly and rigidly conducted to the electric screwdriver and the screw of the screw locking machine through hard transmission without any buffer and elimination, and the instantaneous impact force often causes the screw to break and the internal components of the electric screwdriver to be damaged; therefore, the screw locking machine for the electric vehicle handle needs to be designed. SUMMARY

[0004] The screw locking machine for the electric vehicle handle is a core automatic device in the assembly process of the electric vehicle, and is mainly used for accurately locking and fixing a handle assembly on a handle rod by screws.

[0005] The screw locking machine for the electric vehicle handle is a core automatic device in the assembly process of the electric vehicle, and is mainly used for accurately locking and fixing a handle assembly on a handle rod by screws.

[0006] The screw locking machine for the electric vehicle handle is a core automatic device in the assembly process of the electric vehicle, and is mainly used for accurately locking and fixing a handle assembly on a handle rod by screws.

[0007] As a further optimization scheme of the application, the pressure supply mechanism comprises a connecting rod fixedly penetrating the bottom of the outer sleeve, a limiting groove is formed in the top of the connecting rod, a limiting rod is slidably connected in the limiting groove, the limiting rod is fixed to the bottom of the center frame, the locking bit is fixed to the bottom end of the connecting rod, and the connecting rod is slidably connected to the lower sleeve.

[0008] As a further optimization of the present invention, the side wall of the outer sleeve is uniformly provided with a connecting groove, and the bottom of the outer sleeve is rotatably connected to an annular shell. The annular shell is connected to the inner cavity of the outer sleeve through the connecting groove. An external branch pipe is provided on the annular shell, and a pressure relief valve is provided on the external branch pipe.

[0009] As a further optimization of the present invention, one end of the pressure supply pipe is connected to an external branch pipe, and a pressure holding valve is provided at the connection between the external branch pipe and the pressure supply pipe.

[0010] As a further optimization of the present invention, the positive pressure ventilation mechanism includes a mounting frame, an air supply shell is fixedly installed on one side of the mounting frame, an air pump is installed in the air supply shell, the input end of the air pump passes through the air supply shell and is provided with an air inlet for connecting to an external air source, and a pressure supply pipe and a ventilation pipe are connected to the output end of the air pump.

[0011] As a further optimization of the present invention, one end of the vent pipe is provided with a docking shell, the docking shell is fixedly sleeved on the lower sleeve, and the lower sleeve is connected to the vent pipe through a through groove opened on the side wall.

[0012] As a further optimization of the present invention, the pressing mechanism includes support columns symmetrically fixed to the top of the main unit, the top of the support columns being fixedly connected to the upper support plate, the upper support plate being fixedly connected to the output end of the pressing cylinder, the pressing cylinder being fixed to the bottom of the first support plate, the first support plate being slidably connected to the support columns, the locking electric screwdriver being fixed to the first support plate, and the mounting bracket being fixedly connected to the first support plate.

[0013] As a further optimization of the present invention, a support spring is fixed at the bottom of the first support plate, the support spring is sleeved on the support column, and the bottom end of the support spring is fixed on the second support plate, the second support plate is slidably connected to the support column.

[0014] As a further optimization of the present invention, one of the support columns is provided with a limiting block to restrict the downward movement of the second support plate, and the bottom end of the other support column is fitted with a reset spring, the top end of the reset spring being fixed to the second support plate.

[0015] As a further optimization of the present invention, a fixing frame is fixedly installed on the second support plate, the lower sleeve is fixedly inserted through the fixing frame, and a guide rod is provided on the top of the second support plate, and the guide rod is slidably connected to the mounting frame.

[0016] The beneficial effects of this invention are as follows:

[0017] 1. The air pump of the present invention delivers gas to the inner cavity of the outer sleeve through the pressure supply pipe, annular shell and connecting groove, and forms a stable air pressure with the sealing ring, which pushes the center frame to move upward so that the inclined surfaces of the inner and outer transmission blocks are tightly abutted, realizing the precise transmission of torque from the center frame to the outer sleeve, connecting rod and locking bit; when the screw turning resistance exceeds the threshold, the inclined surfaces of the inner and outer transmission blocks separate, the pressure relief valve opens to release pressure, the center frame falls to cut off the torque transmission, realizing automatic torque cut-off for overload, effectively preventing screw stripping.

[0018] 2. During the tightening process of this invention, the resistance experienced by the locking bit is transmitted to the outer sleeve, and then acts on the inclined surfaces of the inner and outer transmission blocks that abut against each other, causing a squeezing force between the inclined surfaces and forming a downward axial force. This axial force can push the center frame to move slowly down along the outer sleeve, realizing the relative sliding of the inner and outer transmission blocks. This process can buffer the instantaneous overload force, avoid the resistance generated during the tightening process from directly impacting the screw and causing stripping and breakage, and at the same time reduce the load impact of the locking electric screwdriver during normal tightening.

[0019] 3. Before screwing, the air pump is connected to an external air source and the gas is delivered to the lower sleeve through the air pipe and the connecting shell. After passing through the wire feeder, the gas is directly blown into the screw hole of the electric vehicle handlebar. This can thoroughly remove residual dust, debris and other impurities in the hole, avoid impurities affecting the fit between the screw and the hole, prevent the screw from shifting or getting stuck when screwed in, ensure the screw is tightened accurately, and improve the connection reliability between the electric vehicle handlebar and the screw.

[0020] 4. After the locking is completed, when the locking bit moves back to its original position, the lower sleeve is prone to negative pressure due to space changes, which may attract external dust and particulate matter. By restarting the air pump for a short period of blowing, the negative pressure is eliminated by positive airflow, and at the same time, the dust that may have entered the lower sleeve is blown out, avoiding the accumulation of impurities in the sliding gap between the locking bit and the lower sleeve, reducing component wear, preventing structural jamming, and ensuring the smooth operation of each mechanism and the stability of equipment operation. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the positive pressure ventilation mechanism in this invention;

[0023] Figure 3 yes Figure 2 A magnified view of a portion of region A in the middle;

[0024] Figure 4 This is a schematic diagram showing the installation position of the pressure supply mechanism in this invention;

[0025] Figure 5 This is an exploded structural diagram of the pressure supply mechanism in this invention;

[0026] Figure 6 This is a schematic diagram of the installation position of the docking shell in this invention;

[0027] Figure 7 This is a schematic diagram showing the position of the external transmission block in this invention.

[0028] In the diagram: 1. Main unit; 2. Pressing mechanism; 3. Locking electric screwdriver; 4. Anti-slip screw mechanism; 5. Locking bit; 6. Lower sleeve; 7. Positive pressure ventilation mechanism; 8. Drive shaft; 9. Wire feeder; 20. Guide rod; 21. Support column; 22. Upper support plate; 23. Pressing cylinder; 24. First support plate; 25. Support spring; 26. Second support plate; 27. Limiting block; 28. Return spring; 29. ​​Fixing frame; 41. Upper support; 42. 43. Outer sleeve; 44. Sealing ring; 45. Center frame; 46. Inner transmission block; 47. Outer transmission block; 48. Pressure supply mechanism; 79. Mounting frame; 70. Air supply shell; 71. Air pump; 72. Air inlet; 73. Vent pipe; 74. Connecting shell; 45. Connecting rod; 46. Limiting rod; 477. Connecting groove; 48. Annular shell; 49. External branch pipe; 40. Pressure relief valve; 41. Pressure supply pipe; 42. Pressure holding valve. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0030] Example: Please refer to Figures 1-7A screw-locking machine for electric vehicle handlebars includes a main unit 1. The top of the main unit 1 has a clamping slot for installing electric vehicle handlebar clamps, and a pressing mechanism 2 is provided on the top of the main unit 1. A control module for adjusting the device status is installed in the main unit 1. A locking electric screwdriver 3 (which is prior art and will not be described in detail here) is mounted on the pressing mechanism 2. A drive shaft 8 is fixedly connected to the output end of the locking electric screwdriver 3. The drive shaft 8 is connected to a locking screwdriver bit 5 via an anti-slip screw mechanism 4. The anti-slip screw mechanism 4 prevents the screwdriver from over-tightening and causing the bolt to strip. The bottom end of the locking screwdriver bit 5 is slidably connected to a lower sleeve. In the cylinder 6, the lower sleeve 6 is connected to the positive pressure ventilation mechanism 7. The bottom end of the lower sleeve 6 is fixed with a wire feeder 9 (the wire feeder 9 is existing technology and will not be described in detail here). During operation, the electric vehicle handlebar clamp is first installed on the clamp slot, and the electric vehicle handlebar that needs to be screwed is placed on the clamp and fixed by the clamp. The screw fed by the wire feeding device enters the wire feeder 9 and is supported by the wire feeder 9 at the tube opening at the bottom of the lower sleeve 6. The pressing mechanism 2 drives the locking electric screwdriver 3 and the locking screwdriver bit 5 to move down. After the locking screwdriver bit 5 is pressed tightly on the screw, the locking electric screwdriver 3 drives the locking screwdriver bit 5 to rotate and tighten the screw.

[0031] Please see Figures 1-2 and Figures 3-6 The pressing mechanism 2 includes support columns 21 symmetrically fixed on both sides of the top of the main unit 1. An upper support plate 22 is fixedly connected to the top of each support column 21. The output end of a pressing cylinder 23 is fixedly connected to the upper support plate 22, and the pressing cylinder 23 is fixed to the bottom of a first support plate 24. The first support plate 24 is slidably connected to the support columns 21. A locking electric screwdriver 3 is fixed to the first support plate 24. A support spring 25 is sleeved on the support columns 21. The top and bottom of the support spring 25 are respectively fixed to the first support plate 24 and the second support plate 26. The second support plate 26 slides... Connected to the support column 21, one of the support columns 21 is provided with a limiting block 27 to restrict the downward movement of the second support plate 26, and the bottom end of the other support column 21 is fitted with a return spring 28. The elastic coefficient of the return spring 28 is less than that of the support spring 25. The top end of the return spring 28 is fixed to the second support plate 26, and the bottom end of the return spring 28 is fixed to the main unit 1. A fixing frame 29 is fixedly installed on the second support plate 26, and the lower sleeve 6 is fixedly installed on the fixing frame 29. A guide rod 20 is provided on the top of the second support plate 26.

[0032] Initially, the first support plate 24 is at its highest position under the support of the pressing cylinder 23. The second support plate 26 is supported above the electric vehicle handlebars by the return spring 28 and the support spring 25. When locking, the pressing cylinder 23 extends, pushing the first support plate 24 away from the upper support plate 22. At the same time, the first support plate 24 pushes the second support plate 26 downward through the support spring 25. Since the elastic coefficient of the support spring 25 exceeds that of the return spring 28, the return spring 28 will be compressed until the bottom of the second support plate 26 abuts against the limit block 27, and the bolt is pushed into the mounting hole. The pressing cylinder 23 then drives the first support plate 24 to continue pressing down, locking the screwdriver bit. 5. Pressing firmly onto the screw, the locking electric screwdriver 3 drives the locking bit 5 to rotate, tightening the screw. Then, the lower cylinder 23 retracts, pulling the first support plate 24 towards the upper support plate 22. The pressure of the first support plate 24 on the support spring 25 gradually decreases. The compressed support spring 25 recovers its deformation and generates an upward elastic force to assist the first support plate 24 in resetting. At the same time, the reset spring 28 releases its elastic potential energy to push the second support plate 26 to slide upward along the support column 21 until it returns to the initial support position. The second support plate 26 drives the lower sleeve 6 and the wire feeder 9 to reset synchronously through the fixing bracket 29, completing the entire reset action and waiting for the next screw tightening operation.

[0033] Please see Figures 1-5The anti-slip wire mechanism 4 includes an upper support 41 rotatably connected to the drive shaft 8 via a bearing. The upper support 41 is fixed to the top of the outer sleeve 42. A sealing ring 43 is slidably connected in the outer sleeve 42 and fixed to the bottom end of the central frame 44. The outer sleeve 42 is fitted onto the central frame 44. The central frame 44 is slidably connected to the hexagonal columnar structure at the bottom end of the drive shaft 8 through a hexagonal slot at the top. The upper support 41 is used to fix the distance between the drive shaft 8 and the outer sleeve 42, and at the same time, the upper support 41 can prevent the central frame 44 from excessively moving upward and detaching. In the outer sleeve 42, inner transmission blocks 45 are evenly arranged on the side wall of the center frame 44. The top of the inner transmission block 45 abuts against the bottom of the outer transmission block 46, and the outer transmission block 46 is fixed to the inner wall of the outer sleeve 42. A pressure supply mechanism 47 is provided on the outer sleeve 42 to provide air pressure at the bottom of the outer sleeve 42. The center frame 44, together with the sealing ring 43 at the bottom end, forms a piston structure in the outer sleeve 42. Under the action of the air pressure provided by the pressure supply mechanism 47, the top of the inner transmission block 45 abuts against the bottom of the outer transmission block 46, and through the phase... The interlocking inclined planes transmit torque to the outer sleeve 42. A Hall sensor is installed on the center frame 44 to detect its rotational deviation relative to the outer sleeve 42, and a magnet matching the Hall sensor is installed on the inner wall of the outer sleeve 42 (Hall sensors are existing technology and will not be described in detail here). The Hall sensor is connected to the control module. During the rotation of the center frame 44 driven by the drive shaft 8, the torque of the center frame 44 is transmitted to the outer sleeve 42 through the interlocking outer drive block 46 and inner drive block 45, causing the outer sleeve 42 to rotate synchronously. When the resistance of the outer sleeve 42 is too high, the pressure between the outer drive block 46 and the inner drive block 45 will generate an axial force that causes the center frame 44 to move down along the inclined plane. The center frame 44 and the sealing ring 43 move down along the outer sleeve 42, compressing the air below the outer sleeve 42 until the inclined plane of the outer drive block 46 and the inner drive block 45 disengages. When the Hall sensor detects a sudden change in rotational speed between the outer sleeve 42 and the center frame 44, the control module drives the pressure supply mechanism 47 to release pressure. After losing air pressure support, the center frame 44 falls downward to avoid transmitting torque to the outer sleeve 42.

[0034] The pressure supply mechanism 47 includes a connecting rod 471 fixedly extending through the bottom of the outer sleeve 42. A limiting groove is formed at the top of the connecting rod 471, and a limiting rod 472 is slidably connected in the limiting groove. The limiting rod 472 is fixed to the bottom of the central frame 44. The locking bit 5 is fixed to the bottom end of the connecting rod 471, and the connecting rod 471 is slidably connected to the lower sleeve 6. Communicating grooves 473 are evenly distributed on the side wall of the outer sleeve 42, and an annular shell is rotatably connected to the bottom of the outer sleeve 42. 474. The annular shell 474 is interconnected with the inner cavity of the outer sleeve 42 via a connecting groove 473. A pressure sensor for detecting air pressure is embedded in the inner cavity of the outer sleeve 42. An external branch pipe 475 is provided on the annular shell 474, and a pressure relief valve 476 is provided on the external branch pipe 475. A pressure supply pipe 477 is connected to the external branch pipe 475. A pressure holding valve 478 is provided at the connection between the external branch pipe 475 and the pressure supply pipe 477. The pressure supply pipe 477 is connected to the air supply pipe 474. At the output end of pump 73, the air pump 73 is fixed in the air supply housing 72. The input end of the air pump 73 passes through the air supply housing 72 and is provided with an air inlet 74 for connecting to an external air source. When torque needs to be transmitted, the air pump 73 sends gas into the annular housing 474 through the air inlet 74 and enters the inner cavity of the outer sleeve 42 through the connecting groove 473. The generated air pressure then pushes the sealing ring 43 and the center frame 44 upward. After the outer drive block 46 and the inner drive block 45 abut against each other, the pressure relief valve 476 and the pressure holding valve 478 are both closed to maintain the stability of the air pressure inside the outer sleeve 42. The torque of the center frame 44 can be effectively transmitted to the outer sleeve 42 and the connecting rod 471 at the bottom. When the rotational speed between the outer sleeve 42 and the center frame 44 changes abruptly, the control module determines the threshold for triggering anti-slippage and drives the pressure supply mechanism 47 to release pressure. The pressure relief valve 476 opens to discharge the gas, and the center frame 44 falls downward to avoid transmitting torque to the outer sleeve 42.

[0035] Please see Figure 1 and Figure 2The positive pressure ventilation mechanism 7 includes a mounting bracket 71 fixed on the first support plate 24. The mounting bracket 71 is slidably connected to the guide rod 20. The air supply shell 72 is fixed to one side of the mounting bracket 71. An air supply pipe 75 is connected to the output end of the air pump 73. A docking shell 76 is provided at one end of the air supply pipe 75. The docking shell 76 is fixedly sleeved on the lower sleeve 6, and the lower sleeve 6 is interconnected with the air supply pipe 75 through a through groove opened on its side wall. Before tightening, the air pump 73 delivers gas to the lower sleeve 6 through the air supply pipe 75. At this time, the lower end of the locking bit 5 is higher than the docking shell 76, and the gas enters from the top of the lower sleeve 6. After the screw is inserted, it passes through the wire feeder 9 and is blown onto the screw hole of the electric vehicle handlebar. Then, the wire feeder 9 connects to the wire feeding device so that the screw enters the wire feeder 9. The air pump 73 is turned off. After the screw is turned, the lower cylinder 23 drives the locking bit 5 to move upward and return to its original position. After returning to its original position, the air pump 73 is turned on again to blow air briefly. This prevents dust and other particles from being attracted into the lower sleeve 6 due to the negative pressure generated inside the lower sleeve 6 during the upward movement of the locking bit 5. This effectively avoids dust accumulation between the locking bit 5 and the lower sleeve 6, thereby reducing wear between the two, extending the service life of the mechanism, and ensuring the stability of subsequent screw-locking operations.

[0036] It should be noted that, when using this screw fastening machine for electric vehicle handlebars, the equipment first enters the initial state after startup. The control module adjusts each component to reset to the preset position. The pressing cylinder 23 is in the retracted support state, driving the first support plate 24 to stop at the highest position of the support column 21. The second support plate 26 is supported at a preset height above the electric vehicle handlebar under the elastic support of the return spring 28 and the support spring 25. The lower sleeve 6 and the screw feeder 9, which are fixed on the fixing frame 29, are simultaneously in the high position. At the same time, the pressure relief valve 476 and the pressure holding valve 478 of the pressure supply mechanism 47 are in the open state. There is no air pressure in the inner cavity of the outer sleeve 42. The center frame 44 is in the low position under the action of gravity. The inclined surfaces of the inner transmission block 45 and the outer transmission block 46 are separated. The anti-slip screw mechanism 4 is in the disconnected state and cannot transmit torque. The air pump 73 of the positive pressure ventilation mechanism 7 is in the standby state. The lower end of the locking bit 5 is higher than the docking shell 76, and the lower sleeve 6 remains pressure-free and unobstructed.

[0037] Then, the fixture adapted to the handlebar of the electric vehicle to be processed is installed in the fixture slot on the top of the main unit 1. Then, the handlebar of the electric vehicle that needs to be screwed is placed on the fixture. The fixture is used to limit and fix the handlebar of the electric vehicle, ensuring that the screw hole is accurately aligned with the bottom of the lower sleeve 6. The control module sends a signal to start the positive pressure ventilation mechanism 7. The air pump 73 is connected to the external air source through the air inlet 74. The air is delivered to the inside of the lower sleeve 6 through the ventilation pipe 75 and the docking shell 76. After the air enters from the top of the lower sleeve 6, it passes through the wire feeder 9 and blows directly onto the screw hole of the electric vehicle handlebar to remove the dust, debris and other impurities remaining in the hole, ensuring the accuracy of the screw screw in later. After cleaning, the air pump 73 is turned off, and the wire feeding device begins to feed the screw to the wire feeder 9, completing the preparation work before screw fastening.

[0038] After the pre-conditioning is completed, the control module drives the pressure supply mechanism 47 to start, and the air pump 73 starts working again. Gas is sent into the annular shell 474 through the pressure supply pipe 477, and enters the inner cavity of the outer sleeve 42 through the connecting groove 473 on the side wall of the outer sleeve 42. As gas is continuously injected, the air pressure in the inner cavity of the outer sleeve 42 gradually increases. The central frame 44 and the sealing ring 43 at the bottom end form a piston structure. Under the action of air pressure thrust, it slides upward along the outer sleeve 42 until the top of the inner transmission block 45 on the side wall of the central frame 44 is tightly pressed against the bottom slope of the outer transmission block 46 on the inner wall of the outer sleeve 42. Upon contact, the air pressure sensor inside the outer sleeve 42 detects that the pressure has reached the preset value and sends a feedback signal to the control module. The control module drives the pressure holding valve 478 to close and the pressure relief valve 476 to close, maintaining stable air pressure inside the outer sleeve 42. The inner transmission block 45 and the outer transmission block 46 achieve torque transmission and connection through inclined contact. The anti-slip wire mechanism 4 enters the transmission state. Under the limiting cooperation of the limit rod 472 and the connecting rod 471, the center frame 44 can only move up and down along the axis of the connecting rod 471, ensuring that the torque can be accurately transmitted to the locking bit 5.

[0039] Once the torque is ready, the control module extends the pressing cylinder 23, pushing the first support plate 24 to slide downwards along the support column 21. During the downward movement of the first support plate 24, the locking bit 5 is compressed against the support spring 25. The support spring 25 transmits the downward pressure to the second support plate 26. Because the elastic potential energy of the support spring 25 is greater than the elastic force of the return spring 28, the return spring 28 is compressed, causing the second support plate 26 to slide downwards synchronously along the support column 21. The lower sleeve 6 and the wire feeder 9 move downwards until the bottom of the second support plate 26 abuts against the limit block 27, at which point the second support plate 26 stops moving downwards. The screw supported by the screwdriver 9 is precisely pushed into the screw hole of the electric vehicle handlebar. Then, the pressing cylinder 23 continues to drive the first support plate 24 to move down, the support spring 25 is further compressed to generate buffer force, the locking bit 5 presses tightly on the top of the screw, the control module drives the locking electric screwdriver 3 to start, the locking electric screwdriver 3 drives the center frame 44 to rotate through the transmission shaft 8, the center frame 44 transmits torque to the outer sleeve 42 through the inclined surface cooperation of the inner transmission block 45 and the outer transmission block 46, and then transmits it to the locking bit 5 through the connecting rod 471. The locking bit 5 rotates and continues to press down, gradually tightening the screw in the screw hole;

[0040] During the screw tightening process, the Hall sensor on the center frame 44 detects its own rotation status and that of the outer sleeve 42 in real time and feeds it back to the control module. When the resistance on the outer sleeve 42 exceeds the threshold, the squeezing force between the inclined surfaces of the inner transmission block 45 and the outer transmission block 46 generates a downward axial force. This axial force overcomes the air pressure inside the outer sleeve 42 and pushes the center frame 44 and the sealing ring 43 to slide down along the outer sleeve 42, compressing the air below the outer sleeve 42 until the inclined surfaces of the inner transmission block 45 and the outer transmission block 46 are completely separated. The outer sleeve 42 stops rotating while the center frame 44 continues to rotate with the transmission shaft 8. The Hall sensor detects the sudden change in the rotation speed of both and sends a signal to the control module. The control module determines that the anti-slip wire threshold is triggered and quickly drives the pressure relief valve 476 of the pressure supply mechanism 47 to open. The gas inside the outer sleeve 42 is quickly discharged, and the center frame 44 falls down after losing air pressure support, completely cutting off the torque transmission and preventing the screw from stripping due to over-tightening. At the same time, the locking electric screwdriver 3 stops working.

[0041] After the locking operation is completed, the control module drives the lower cylinder 23 to retract, pulling the first support plate 24 along the support column 21 towards the upper support plate 22. The fixing frame 29 drives the lower sleeve 6 and the wire feeder 9 to reset synchronously. The locking bit 5 separates from the screw and moves upward to return to its position. Then, the control module restarts the air pump 73 of the positive pressure ventilation mechanism 7 to blow air briefly. When the locking bit 5 moves upward, the dust adsorbed by the negative pressure inside the lower sleeve 6 is blown out to prevent external dust and particles from adsorbing into the lower sleeve 6. The operator removes the electric vehicle handlebars after the locking is completed and waits for the next operation cycle.

[0042] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A screw fastening machine for electric vehicle handlebars, comprising a main unit (1), characterized in that: The top of the main unit (1) is provided with a clamping slot, and the top of the main unit (1) is provided with a pressing mechanism (2). A locking electric screwdriver (3) is provided on the pressing mechanism (2). The output end of the locking electric screwdriver (3) is fixedly connected to a drive shaft (8). The drive shaft (8) is connected to an anti-slip wire mechanism (4). A locking screwdriver bit (5) is connected to the anti-slip wire mechanism (4). The bottom end of the locking screwdriver bit (5) is slidably connected in a lower sleeve (6). The lower sleeve (6) is connected to a positive pressure ventilation mechanism (7). A wire feeder (9) is fixed at the bottom end of the lower sleeve (6). The anti-slip wire mechanism (4) includes an upper support (41) rotatably connected to the drive shaft (8), the upper support (41) being fixed to the top of the outer sleeve (42), a sealing ring (43) being slidably connected in the outer sleeve (42), the sealing ring (43) being fixed to the bottom end of the central frame (44), the central frame (44) being slidably connected to the bottom end of the drive shaft (8) through a hexagonal slot at the top, inner drive blocks (45) being evenly arranged on the side wall of the central frame (44), the top of the inner drive blocks (45) abutting against the bottom of the outer drive blocks (46), the outer drive blocks (45) being... 6) Fixed to the inner wall of the outer sleeve (42), the outer sleeve (42) is provided with a pressure supply mechanism (47); the pressure supply mechanism (47) includes a connecting rod (471) fixed through the bottom of the outer sleeve (42), a limit groove is opened at the top of the connecting rod (471), a limit rod (472) is slidably connected in the limit groove, the limit rod (472) is fixed to the bottom of the center frame (44), the locking bit (5) is fixed to the bottom end of the connecting rod (471), and the connecting rod (471) is slidably connected to the lower sleeve (6); the outer sleeve (42) The side wall of the outer sleeve (42) is evenly provided with a connecting groove (473). The bottom of the outer sleeve (42) is rotatably connected to an annular shell (474). The annular shell (474) is connected to the inner cavity of the outer sleeve (42) through the connecting groove (473). An external branch pipe (475) is provided on the annular shell (474), and a pressure relief valve (476) is provided on the external branch pipe (475). The external branch pipe (475) is connected to one end of the pressure supply pipe (477), and a pressure holding valve (478) is provided at the connection between the external branch pipe (475) and the pressure supply pipe (477).

2. The screw-fastening machine for electric vehicle handlebars according to claim 1, characterized in that: The positive pressure ventilation mechanism (7) includes a mounting frame (71), a gas supply shell (72) is fixedly installed on one side of the mounting frame (71), an air pump (73) is installed in the gas supply shell (72), the input end of the air pump (73) passes through the gas supply shell (72) and is provided with an air inlet (74) for connecting to an external air source, and the output end of the air pump (73) is connected to a pressure supply pipe (477) and a ventilation pipe (75).

3. A screw-fastening machine for electric vehicle handlebars according to claim 2, characterized in that: One end of the vent pipe (75) is provided with a docking shell (76), which is fixedly sleeved on the lower sleeve (6), and the lower sleeve (6) is connected to the vent pipe (75) through a through groove opened on the side wall.

4. A screw-fastening machine for electric vehicle handlebars according to claim 3, characterized in that: The pressing mechanism (2) includes a support column (21) symmetrically fixed on the top of the main unit (1). The top of the support column (21) is fixedly connected to the upper support plate (22). The upper support plate (22) is fixedly connected to the output end of the pressing cylinder (23). The pressing cylinder (23) is fixed to the bottom of the first support plate (24). The first support plate (24) is slidably connected to the support column (21). The locking electric screwdriver (3) is fixed to the first support plate (24). The mounting bracket (71) is fixedly connected to the first support plate (24).

5. A screw-fastening machine for electric vehicle handlebars according to claim 4, characterized in that: The bottom of the first support plate (24) is fixed with a support spring (25), the support spring (25) is sleeved on the support column (21), and the bottom end of the support spring (25) is fixed on the second support plate (26), the second support plate (26) is slidably connected to the support column (21).

6. A screw-fastening machine for electric vehicle handlebars according to claim 5, characterized in that: One of the support columns (21) is provided with a limiting block (27) to restrict the downward movement of the second support plate (26), and the bottom end of the other support column (21) is fitted with a reset spring (28), the top end of the reset spring (28) is fixed on the second support plate (26).

7. A screw-fastening machine for electric vehicle handlebars according to claim 6, characterized in that: A fixing frame (29) is fixedly installed on the second support plate (26), and the lower sleeve (6) is fixedly inserted through the fixing frame (29). A guide rod (20) is provided on the top of the second support plate (26), and the guide rod (20) is slidably connected to the mounting frame (71).

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